JavaSE實現猜拳遊戲

import java.util.Random;
import java.util.Scanner;

public class CaiQuan {
  private String userName;//存儲用戶名
  private String cName;//存儲對手
  private int cNameNum;//存儲玩傢選擇的對手代號
  private String userInfo;//用戶出拳信息
  private String cInfo;//電腦出拳信息
  private int uNum;//接收用戶輸入的數
  private int cNum;//接受電腦產生的數
  private Scanner sc;
  private static final String Army01 = "張飛";
  private static final String Army02 = "關羽";
  private static final String Army03 ="劉備";
  private static boolean flag ;//平局和電腦勝為true,玩傢贏為fasle
  private int selectInfo;//玩傢是否繼續遊戲，1表示繼續，0表示結束
  private int score = 0;//分數

  public static void main(String[] args) {
    CaiQuan cq = new CaiQuan();
    cq.gameInfo();
    do{
      cq.selectArmy();
      cq.userInput();
      cq.cOutput();
      cq.compareCaiQuan();
      cq.gameOver();
    }while(flag);
  }

  public CaiQuan(){

  }
  //打印遊戲信息
  public void gameInfo(){
    System.out.println("歡迎進行猜拳小遊戲！");
    System.out.println("1.表示石頭  2.表示剪刀  3.表示佈");
    sc = new Scanner(System.in);
    if(userName==null){
      System.out.println("玩傢請輸入用戶名：");
      System.out.println("=============================================");
      userName = sc.next();
    }
  }
  //選擇對手
  public void selectArmy(){
    System.out.println("=============================================");
    System.out.println("對手選擇列表：");
    System.out.println("1："+Army01+"  2："+Army02+"   3："+Army03);
    System.out.println(userName+"請輸入對手:");
    System.out.println("=============================================");
    test01();
    System.out.println(userName+",您選擇的對手為"+cName);
    System.out.println("=============================================");
  }
  //判斷對手
  public void test01(){
    cNameNum = sc.nextInt();
    if(cNameNum==1){
      cName = Army01;
    }else if(cNameNum==2){
      cName = Army02;
    }else if(cNameNum==3){
      cName = Army03;
    }else{
      System.out.println("對手選擇錯誤，請重新選擇！");
      test01();
    }  
  }
  //開始遊戲
  public void userInput(){
    System.out.println(userName+"請出拳:");
    System.out.println("1.表示石頭  2.表示剪刀  3.表示佈");
    System.out.println("=============================================");
    test();
    System.out.println("=============================================");
    System.out.println(userName+"的出拳為："+userInfo);
  }
  //判斷輸入的數是否錯誤
  public void test(){
    uNum = sc.nextInt();
    if(uNum==1){
      userInfo = "石頭";
    }else if(uNum==2){
      userInfo = "剪刀";
    }else if(uNum==3){
      userInfo = "佈";
    }else{
      System.out.println("輸入錯誤，請請重新輸入");
      test();
    }
  }
  //電腦出拳
  public void cOutput(){
    Random random = new Random();
    cNum = random.nextInt(3)+1;
    if(cNum==1){
      cInfo = "石頭";
    }else if(cNum==2){
      cInfo = "剪刀";
    }else if(cNum==3){
      cInfo = "佈";
    }
    System.out.println(cName+"出拳為:"+cInfo);
  }
  //比較大小
  public void compareCaiQuan(){
    String msg = null;
    if(uNum == 1){
      if(cNum == 1){
        msg="此時平局";
        flag = true;
      }else if(cNum == 2){
        score += 1; 
        msg="此時"+userName+"勝出";
        flag = false;
      }else {
        score -= 1; 
        msg="此時"+cName+"勝出";
        flag = true;
      }
      return;
    }else if(uNum == 2){
      if(cNum == 1){
        score -= 1;
        msg="此時"+cName+"勝出";
        flag = true;
      }else if(cNum == 2){
        msg="此時平局";
        flag = true;
      }else {
        score += 1;
        msg="此時"+userName+"勝出";
        flag = false;
      }
    }else {
      if(cNum == 1){
        score += 1;
        msg="此時"+userName+"勝出";
        flag = false;
      }else if(cNum == 2){
        score -= 1;
        msg="此時"+cName+"勝出";
        flag = true;
      }else {
        msg=" 此時平局";
        flag = true;
      }
    }
    System.out.println(msg);
  }
  //遊戲結束信息
  public void gameOver(){
    System.out.println("=============================================");
    if(flag==true){
      System.out.println(userName+",您沒有戰勝電腦,不要灰心，請繼續遊戲!");
      System.out.println("=============================================");
      System.out.println("繼續遊戲請輸入：1   結束遊戲請輸入：2");
      test02();
    }else if(flag==false){
      System.out.println(userName+",您太厲害瞭,竟然戰勝瞭"+cName+"，遊戲結束！");
      System.out.println("=============================================");
      System.out.println("繼續遊戲請輸入：1   結束遊戲請輸入：2");
      test02();
    }
  }
  //判斷玩傢是否繼續遊戲
  public void test02(){
    selectInfo = sc.nextInt();
    if(selectInfo==1){
      flag = true;
    }else if(selectInfo==2){
      System.out.println(userName+",您的遊戲分數為："+score);
      System.exit(0);
    }else{
      System.out.println(userName+"，您輸入錯誤，請重新輸入！");
      test02();  
    }
  }
}